hi
I built a class t amp that has no volume control yet. My source and my computer is how I adjust the volume control.
I'm wondering if the amp always output the maximum wattage if I have no volume control?
I'm scared of that because if so, I have a 10% distortion if my class t is always at the max. watts output
thanks
I built a class t amp that has no volume control yet. My source and my computer is how I adjust the volume control.
I'm wondering if the amp always output the maximum wattage if I have no volume control?
I'm scared of that because if so, I have a 10% distortion if my class t is always at the max. watts output
thanks
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It doesn't quite work like that...
Class T or a conventional linear Class AB amp with no volume control simply operates with its nominal input sensitivity. I think I see what you are getting at... the output from the Class T is the same, whether or not a volume control is used, for a given output.
A real problem could be that using a PC as volume control (that is, control by software) could introduce some impairment to the audio quality (depending how the control is arranged and operates). Far better to have the audio available un-attenuated and use a conventional pot.
Class T or a conventional linear Class AB amp with no volume control simply operates with its nominal input sensitivity. I think I see what you are getting at... the output from the Class T is the same, whether or not a volume control is used, for a given output.
A real problem could be that using a PC as volume control (that is, control by software) could introduce some impairment to the audio quality (depending how the control is arranged and operates). Far better to have the audio available un-attenuated and use a conventional pot.
the output from the Class T is the same, whether or not a volume control is used, for a given output.
I plan on adding a volume pot to my amp, but right now its fair to say that it outputs maximum wattage at any time no matter how attenuated the signal from the source? so that introduce a lot of distortion!
maybe I didnt understood you right?
I plan on adding a volume pot to my amp, but right now its fair to say that it outputs maximum wattage at any time no matter how attenuated the signal from the source? so that introduce a lot of distortion!
maybe I didnt understood you right?
You mean you hear distortion when you have the volume low ? That could be the effect I mentioned, re using the PC as the volume control.
When you say "it outputs maximum wattage at all times"... that implies that what you are hearing from the speakers would be really loud. Is it ?
And another thought, maybe there is some other problem at work here. Have you tried the set up with a "normal" amp to see if the distortion is still present.
When you say "it outputs maximum wattage at all times"... that implies that what you are hearing from the speakers would be really loud. Is it ?
And another thought, maybe there is some other problem at work here. Have you tried the set up with a "normal" amp to see if the distortion is still present.
hi
theres no evident distortion. this is a secondary system and im using a class t amp with no volume control. since the amp has no volume control, is it fair to think that the amp always output the max wattage at all time? if so, the distortion plot of the t amp shows that at maximum output level, distortion is up 10%.
I think its a really stupid question so thats why you dont understand the question.
theres no evident distortion. this is a secondary system and im using a class t amp with no volume control. since the amp has no volume control, is it fair to think that the amp always output the max wattage at all time? if so, the distortion plot of the t amp shows that at maximum output level, distortion is up 10%.
I think its a really stupid question so thats why you dont understand the question.
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No, it doesn't output its max wattage at all times. The way a switching amp works is by varying the duty cycle of the output away from a 50:50 ratio. The more input signal you apply, the more that ratio alters and the result is a voltage is created (that is what appears across the speaker).
So the Class T amp produces max distortion when the input signal drives that duty cycle close to it max limits 0:100 or 100:0. And that is when the audio produced is at max volume.
So you have nothing to worry over 🙂
So the Class T amp produces max distortion when the input signal drives that duty cycle close to it max limits 0:100 or 100:0. And that is when the audio produced is at max volume.
So you have nothing to worry over 🙂
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